Stress & Cortisol
Composed under pressure.
Stress & Cortisol
What's happening
Cortisol is the body's principal glucocorticoid. A measurable circulating hormone with a daily rhythm and an acute response curve to physical and psychological load. Chronically elevated cortisol disrupts sleep architecture, depletes magnesium and B-vitamins faster than diet replaces them, and blunts the parasympathetic system. Rhodiola Rosea's active compounds (rosavins + salidroside) modulate the HPA-axis cortisol response in the Olsson stress-related-fatigue RCT. L-Theanine increases alpha-wave EEG activity, the relaxed-but-alert state, without sedation. Glycine has placebo-controlled-RCT evidence for improving subjective sleep quality and reducing next-morning sleepiness in volunteers with poor sleep.
Evidence. Peer-reviewed, PubMed-verified
Rhodiola Rosea. Olsson stress-related fatigue RCT, 60 adults at 576 mg/day SHR-5 for 28 days (Olsson 2009, Planta Med); Shevtsov dose-finding RCT in 161 cadets (Shevtsov 2003, Phytomedicine); Ishaque systematic review of 11 RCTs (Ishaque 2012, BMC Complement Altern Med).
L-Theanine. Owen theanine + caffeine attention RCT (Owen 2008, Nutr Neurosci); Hidese 200 mg/day × 4 weeks RCT in healthy adults (Hidese 2019, Nutrients); Nobre mental-state characterisation (Nobre 2008, Asia Pac J Clin Nutr).
Magnesium. de Baaij comprehensive review (de Baaij 2015, Physiol Rev); Schuchardt bisglycinate bioavailability (Schuchardt 2017, Curr Nutr Food Sci). [GB-NHC] Magnesium contributes to normal psychological function · reduction of tiredness and fatigue (≥56.25 mg/day; Rōnin delivers 200 mg).
Full register: /pages/research.
How Rōnin addresses it
| Ingredient | Dose | Role |
|---|---|---|
| Rhodiola Rosea | 350mg | ≥3% rosavins, ≥1% salidroside; HPA-axis modulation research |
| L-Theanine | 200mg | Suntheanine ≥98% L-isomer; alpha-wave EEG activity |
| Glycine | 2,000mg | Inhibitory neurotransmitter; glutathione precursor |
| Magnesium Bisglycinate | 200mg elemental | [GB-NHC] normal psychological function · tiredness/fatigue |
| Vitamin B6 (P-5-P) | 2.8mg | [GB-NHC] normal psychological function · hormonal regulation |
| Vitamin C | 500mg | Adrenal cortex concentrates ascorbate; [GB-NHC] tiredness/fatigue |
| Vitamin B5 (Pantothenic acid) | 6mg | CoA precursor; [GB-NHC] normal mental performance |
All ingredients listed are included in the Rōnin Daily Formula at the stated doses. One daily scoop.